Mowerman Posted July 11, 2010 Share Posted July 11, 2010 Well done Netty. When a model you have spent many hours building flys well its a great feeling even if you get someone else to do the first, trimming, flight. I enjoy building but generaly get our clubs best flyer to do the first flight and the satisfaction of seeing a sucessful flight is great. Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted February 26, 2023 Share Posted February 26, 2023 Hi there Tim! I'm building a Dynaflight BoT from a kit that has sat untouched for over ten years, and I have loved getting back into building with balsa. I faithfully followed the plans and I am struggling to have faith in the wing joiner and the banded on wings. How have you got on with yours? Specifically, I'm looking for answers to... 1) What size wing bands do I need? 2) Did you add a fibreglass band around the wing root area? 3) I'm thinking of adding a couple of locating pins to the wing roots - did you? I plan to fly mine off slopes on balmy summer days 😎 BW Matthew Quote Link to comment Share on other sites More sharing options...
Wilco Wingco Posted February 27, 2023 Share Posted February 27, 2023 I bought a BOT off E-bay unseen and when I picked it up I found that the winds had dihedral not polihydral. Still at the price I couldn't complain. Will this make any difference to its flying characteristics? I plan to slope it on summer evenings. Quote Link to comment Share on other sites More sharing options...
Geoff Copping Posted March 5, 2023 Share Posted March 5, 2023 On 26/02/2023 at 21:47, Matthew Lloyd said: Hi there Tim! I'm building a Dynaflight BoT from a kit that has sat untouched for over ten years, and I have loved getting back into building with balsa. I faithfully followed the plans and I am struggling to have faith in the wing joiner and the banded on wings. How have you got on with yours? Specifically, I'm looking for answers to... 1) What size wing bands do I need? 2) Did you add a fibreglass band around the wing root area? 3) I'm thinking of adding a couple of locating pins to the wing roots - did you? I plan to fly mine off slopes on balmy summer days 😎 BW Matthew I built the kit version and flew it for years. A beautiful glider that loves to fly. I built as per plan. If you're only sloping it then the joiner and bands will be fine. I bungeed mine and it held ok. The only time it was a problem was when my mate flew it and he insisted on trying to get maximum height on launch and it would increase the dihedral somewhat. Banned him after that!! The wing is very strong for balsa. The one thing I would strongly recommend is to fit a set of airbrakes because it loves to fly and you may struggle to land it on a slope. G 1 Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted March 5, 2023 Author Share Posted March 5, 2023 Blimey, here's a blast from the past.... We still have the BoT, although it's not flown in several years now. I did make a few mods though; I lengthened the nose by 50mm, to allow me to fit a smaller 3S 2700 li-po, but still maintain the CG position. This saved several ounces from the AUW. I replaced the fore and aft wing dowels, with conventional ones that passed through the fuselage sides. It tended to hunt in pitch, which I put down to excessive play in the elevator snake, so I replaced it with a conventional pushrod which quietened things down a bit. Tim 1 Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted March 6, 2023 Share Posted March 6, 2023 Thank you for your input guys. I have changed the wing fixing to wing bolts, and swapped the joiner from steel to carbon. I have also fitted spoilers! Soon I'll be covering it. Very much looking forward to flying it. I found this excellent article written by the BoT designer, reviewing the Dynaflight kit - very helpful - if tricky to read! 1 Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted April 19, 2023 Share Posted April 19, 2023 Hi @Tim Hooper - I'm close to the first flight of my BoT 🙂 But nowhere can I find any suggestions of the throws on the rudder and elevator - would you please let me know what you have on your model? Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted April 19, 2023 Author Share Posted April 19, 2023 Hi Matthew, From memory, I recall that the all-flying tailplane is pretty powerful, so I'd suggest no more than 10mm movement (total) at the trailing edge, with a dollop of expo dialled in to soften the central response. In contrast, the rudder needs a fair amount of throw on this slow-flying glider, so as much as you can devise (again with expo to suit your taste). Tim 1 Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted April 25, 2023 Share Posted April 25, 2023 On 19/04/2023 at 21:48, Tim Hooper said: Hi Matthew, From memory, I recall that the all-flying tailplane is pretty powerful, so I'd suggest no more than 10mm movement (total) at the trailing edge, with a dollop of expo dialled in to soften the central response. In contrast, the rudder needs a fair amount of throw on this slow-flying glider, so as much as you can devise (again with expo to suit your taste). Tim Thank you Tim Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted April 25, 2023 Share Posted April 25, 2023 One more evening required to sort the balance and throws, then I'm good for a flat field trim test. Dreaming of balmy days sloping my lovely new toy 😎 3 Quote Link to comment Share on other sites More sharing options...
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